filmstrip meaning in Information Science terminology / glossary / dictionary is:
A length of 35mm or 16mm black and white or color film consisting of a sequence of related still images, with or without text or captions, intended to be projected one at a time at slow speed using a filmstrip projector. Filmstrips are of variable length, usually no longer than 50 frames. Some include a signal that automatically advances the projector in synchrony with recorded sound. Compare with filmslip.